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Definition of troland
: a unit of intensity of light at the retina equal to the illumination received per square millimeter of a pupillary area from a surface having a brightness of one candle per square meter
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Origin and Etymology of troland
after Leonard T. Troland †1932 American psychologist and physicist
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Biographical Note for troland
Troland
, Leonard Thompson
(1889–1932), American psychologist and physicist. Troland was a university instructor of psychology and a practical engineer. He devised most of the photographic and mechanical apparatus for color motion pictures. In 1922 he wrote a monograph summarizing the current state of visual science. In 1929 and 1930 he published a major two-volume treatise on the principles of psychophysiology.
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